After a minute without doing it, the cornea suffers a tear desiccation and we begin to feel discomfort. According to Dr. Jorge Alió, director of the Alicante Ophthalmological Institute, the blink frequency ranges between 5 and 15 times per minute, although this depends on many factors. Among them, the most important are the tear production of each person, environmental humidity, irritants in the atmosphere, light intensity, age and the attention that is being paid to a subject. Thus, the more interest it arouses in us, the less flickering occurs.
Can we be without blinking?
Japanese scientists create a 'washing machine for humans'
Can you imagine taking a relaxing bath in a machine that washes you with bubbles, plays relaxing music or videos?
Insect swarms generate as much electricity as a thunderstorm
Swarms of bees can generate an electrical charge of 1,000 volts per meter, a higher voltage density than thunderclouds and electrified dust storms.
This is what the Earth's magnetic field sounds like
The shield that protects our planet sounds 'pretty scary', according to ESA engineers.
Days were only 17 hours long 2.46 billion years ago
It was when the Moon was much closer to our planet. As the centuries pass, the Moon slowly recedes and the length of our day gradually lengthens accordingly.
Women are better at doing crosswords
A new study has revealed that women have a 'small but robust' advantage over time.